4508 POST LOOP, ROUND ROCK, TX 78681
ROUND ROCK, 78681 — williamson County
Property at a Glance
This home is estimated between $339,353 and $539,357, with a best estimate of $339,932. That places the property below the G799514C - MAYFIELD RANCH median of $523,371, in a neighborhood that declined 9.3% over the past year.
Estimated Value Range
$339,932
$388,893
Based on 5 comparable properties(5 in the same subdivision)
Based on 5 comparable properties in G799514C - MAYFIELD RANCH, this home's estimated market value is between $339,353 and $539,357. All 5 comparables are in the same subdivision, giving this estimate high confidence.
Comparable Properties (5)
Adjusted -$116,822 for 527 sqft less living space. Net adjustment: -$116,822.
Adjusted -$152,511 for 688 sqft less living space and +$7,304 for being newer. Net adjustment: -$145,207.
Adjusted -$152,068 for 686 sqft less living space and +$9,130 for being newer. Net adjustment: -$142,938.
Adjusted -$35,468 for 160 sqft less living space and +$9,130 for being newer. Net adjustment: -$26,338.
Adjusted -$146,526 for 661 sqft less living space and +$9,130 for being newer. Net adjustment: -$137,396.
The Neighborhood
This home is valued 25.7% below the G799514C - MAYFIELD RANCH median of $523,371. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 9.3% over the past year.
G799514C - MAYFIELD RANCH
below averageThis home is -25.7% below the subdivision median.
Tax Analysis
The estimated annual property tax is $8,036 across all districts. With a homestead exemption claimed, that drops to $6,493 — saving $1,543 per year. That's $541 per month a buyer should budget. The assessed value increased roughly in line with the neighborhood, so a tax protest is unlikely to yield significant savings.
Tax Districts
| District | Type | Rate | Annual Amount |
|---|---|---|---|
| Georgetown ISD | School | 1.0506% | $4,086 |
| Highlands at Mayfield Ranch MUD | MUD | 0.4850% | $1,886 |
| Williamson County | County | 0.3694% | $1,437 |
| Williamson County ESD #9 - Round Rock | ESD | 0.0999% | $389 |
| Williamson County FM/Rd | County | 0.0443% | $172 |
| Upper Brushy Creek WCID | Water | 0.0170% | $66 |
| Williamson Central Appraisal District | cad | 0.0000% | $0 |
| Total Annual Tax | 2.0663% | $8,036 | |
Mortgage Context
At today's 30-year mortgage rate of 6.38%, a buyer financing $339,932 would pay approximately $2,122 per month (principal and interest only, excluding taxes and insurance).